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wwwtm Zlab.com Helena, MT 877.472 -0711 a Billings, MT 808- 735 -4489 * Casper, WY 888 -235 -0515 <br />Mafj" Endam $to fali2 f Gillette, WY 866.686 -7175 • Rapid City, SO 888 -672 -1225 • Coiiege Station, TX 888 -690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 05/01/13 <br />Project: Schwartz SW 4/03/13 S26860 Work Order: C13040198 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 Analytical Run: SUB- B202581 <br />Sample ID: ICV Initial Calibration Verification Standard 04/08/13 10:18 <br />Nitrogen, Nitrate +Nitrite as N 22.7 mg /L 0.060 104 90 110 <br />Method: E353.2 <br />Batch: B_R202581 <br />Sample ID: MBLK <br />Method Blank <br />Run: SUB- B202581 <br />04/08/13 10:19 <br />Nitrogen, Nitrate +Nitrite as N <br />ND mg /L <br />0.005 <br />Sample ID: LFB <br />Laboratory Fortified Blank <br />Run: SUB- B202581 <br />04/08/13 10:21 <br />Nitrogen, Nitrate +Nitrite as N <br />1.04 mg /L <br />0.010 <br />106 90 110 <br />Sample ID: B13040532 -001 EMS <br />Sample Matrix Spike <br />Run: SUB - 13202581 <br />04/08/13 10:27 <br />Nitrogen, Nitrate +Nitrite as N <br />1.06 mg /L <br />0.010 <br />106 90 110 <br />Sample ID: B13040532 -001 EMSD <br />Sample Matrix Spike Duplicate <br />Run: SUB - 13202581 <br />04/08/13 10:28 <br />Nitrogen, Nitrate +Nitrite as N <br />1.06 mg /L <br />0.010 <br />106 90 110 <br />0.0 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 18 of 25 <br />